using Object_id() function with #tables

Question

I want to ensure if a temporary table exists in my database or not.

I tried to use OBJECT_ID() function but it seems that I can\'t use it with temporary

Answer 1

When OBJECT_ID is called, for Temporary table/Hash table TEMPDB it must be specified unless it is already working database.

I check in SQL2008 and verify below.

USE SampleDB
create table #tt1 (dummy int)
select OBJECT_ID('SampleDB..#tt1')  -- returns NULL
select OBJECT_ID('tempdb..#tt1')   -- returns ID